642474060287 has 2 divisors, whose sum is σ = 642474060288. Its totient is φ = 642474060286.

The previous prime is 642474060281. The next prime is 642474060383. The reversal of 642474060287 is 782060474246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 642474060287 - 2¹⁰ = 642474059263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642474060281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321237030143 + 321237030144.

It is an arithmetic number, because the mean of its divisors is an integer number (321237030144).

Almost surely, 2^642474060287 is an apocalyptic number.

642474060287 is a deficient number, since it is larger than the sum of its proper divisors (1).

642474060287 is an equidigital number, since it uses as much as digits as its factorization.

642474060287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3612672, while the sum is 50.

The spelling of 642474060287 in words is "six hundred forty-two billion, four hundred seventy-four million, sixty thousand, two hundred eighty-seven".